It appears that the recent execution-style murder of a Massachusetts man was committed by two Central American teens that came to the U.S. as Unaccompanied Alien Children (UAC) under President Obama’s open border free-for-all. Tens of thousands of illegal immigrant minors—mostly from El Salvador, Guatemala and Honduras—have entered the country through the Mexican border since the influx began in the summer of 2014 and the administration has relocated them nationwide.

News reports indicate that the 17-year-olds charged in the gruesome Massachusetts killing entered the U.S. recently as UAC’s and both have ties to MS-13, according to authorities cited by various outlets. They lived in Everett and one of the teens, Cristian Nunez-Flores, moved to Massachusetts from his native El Salvador a year and a half ago which is when the influx of Central American minors began. His parents remain in El Salvador, according to a local news article. The other gangbanger’s name is Jose Vasquez Ardon and he too is a recent arrival from Central America. Prosecutors say the teens, described in a local news article as “baby-faced boys,” shot a 19-year-old in the head. Both are being held without bail for obvious reasons.

This week two federal lawmakers—a senator and a congressman—are demanding answers from the administration involving how the teens entered the U.S. Specifically, they want to confirm if the gangbangers came as UACs and when exactly they arrived. The legislators, Senator Chuck Grassley, chair of the Senate Judiciary Committee, and Congressman Bob Goodlatte, chair of the House Judiciary Committee, also want to know if the administration had knowledge about the suspects’ ties with a criminal gang. “Please provide a complete copy of the alien file for Jose Vasquez Ardon and Cristian Nunez-Flores,” the lawmakers state in a letter to the Department of Homeland Security (DHS) and Health and Human Services (HHS), the agency that’s mostly handled the barrage of UACs and the relocation process. “Please provide any other information collected or maintained by DHS and HHS regarding either Jose Vasquez Ardon or Cristian Nunez-Flores,” the request further states.

Shortly after the first batch of UAC’s arrived in mid-2014, Judicial Watch reported that many had ties to gang members in the U.S., specifically MS-13. Homeland Security sources directly involved with the UAC crisis told JW that street gangs, including MS-13, went on a recruiting frenzy at U.S. shelters housing the illegal alien minors and they used Red Cross phones to communicate. The MS-13 is a feared street gang of mostly Central American illegal immigrants that’s spread throughout the U.S. and is renowned for drug distribution, murder, rape, robbery, home invasions, kidnappings, vandalism and other violent crimes. The Justice Department’s National Gang Intelligence Center (NGIC) says criminal street gangs like the MS-13 are responsible for the majority of violent crimes in the U.S. and are the primary distributors of most illicit drugs.

Just a few weeks ago dozens of MS-13 members were indicted in Boston for serious crimes including murder, conspiracy to commit murder, drug trafficking, firearm violations, federal racketeering and immigration offenses. Several of the defendants are responsible for murdering at least five people since 2014 and the attempted murder of at least 14 in Chelsea and East Boston, according to the federal indictment. MS-13 members also sell cocaine, heroin and marijuana and commit robberies to generate income to pay monthly dues to incarcerated gang leadership in El Salvador, federal prosecutors say. The money is used to pay for weapons, cell phones, shoes, food and other supplies for MS-13 thugs in and out of jail in El Salvador.

The affiliation between gangs and the hordes of illegal immigrant youths that the Obama administration keeps taking in is a story Judicial Watch has been reporting for more than a year. Last fall the Texas Department of Public Safety confirmed that the MS-13 is a top tier gang thanks to the influx of illegal alien gang members that have crossed into the state recently. The number of MS-13 members encountered by U.S. Border Patrol in the Rio Grande Valley sector has increased each year, accelerating in 2014 and coinciding with increased illegal immigration from Central America during the same period, the agency disclosed in a report linked to JW’s story. This clearly refers to the UAC crisis that saw over 60,000 illegal immigrants—many with criminal histories—storm into the U.S. in a matter of months.